Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1984-10-01
1986-01-07
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
5253331, 525355, 525356, 5253591, 5253592, 5253593, C08F 822
Patent
active
045635064
ABSTRACT:
A process for the continuous bromination of butyl rubber polymer by contacting the polymer with a brominating agent in a continuous flow device in which means are provided for disengaging reaction by-products and unreacted halogenating agents from the reaction mixture, by deforming and disrupting the brominated polymer surface and injecting a neutralizing agent into the polymer immediately after reaction thereby neutralizing the polymer, comprising contacting a polymer substantially free of acid scavengers, with the brominating agent at elevated temperatures the bromination reaction being carried out in an acid atmosphere, thereby producing a polymer having a substantial fraction of the bromine in the primary allylic position.
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Baldwin Francis P.
Davis William M.
Foroulis Zisis A.
Kowalski Ronald C.
Newman Neil F.
Exxon Research & Engineering Co.
Lagani A.
Lipman Bernard
Schofer Joseph L.
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